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Alumina Electronic Insulators
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alumina tubes
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Typical
Applications
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high voltage electronic vacuum
switch |
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X-ray tube |
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thyratrons |
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electron beam emitter |
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Typical Material
Properties
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volume density |
≥3.6 g/cm3 |
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breakdown voltage |
＞15 kV/mm |
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dielectric constant
at 1 MHz and 20°C |
9 ～ 10 |
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dielectric loss tangent
at 1 MHz and 20°C |
＜3.5 E-4 |
| volume resistivity |
＞E13 Ω•cm |
| coefficient of thermal expansion |
6.5 E-6 ～ 8 E-6 mm/°C |
| bending strength |
≥275 MPa |
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